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In this March 18, 2013 photo provided by the Metropolitan Opera, Alexey Markov plays Valentin during a dress rehearsal of “Faust” at the Metropolitan Opera in New York. (AP Photo/Metropolitan Opera, Cory Weaver)

In this March 18, 2013 photo provided by the Metropolitan Opera, Alexey Markov plays Valentin during a dress rehearsal of “Faust” at the Metropolitan Opera in New York. (AP Photo/Metropolitan Opera, Cory Weaver)